dt-bindings: arm: amlogic: Add TCU Fernsehfee 3.0 board

dt-bindings: arm: amlogic: Add TCU Fernsehfee 3.0 board

Fernsehfee ("TV fairy") 3.0 is a set-top box with HDMI input and output
ports. It originally ran Android 4.4 and a Linux 3.10 kernel.

  https://fernsehfee.de/  (German)
  https://telefairy.com/  (English)

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: J. Neuschäfer <j.ne@posteo.net>
Link: https://lore.kernel.org/r/20250428-fernsehfee-v2-2-293b98a43a91@posteo.net
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>